Hey guys, I just bought a quicksilver nemesis prop by eBay, but when I receive it I noticed that in the box says 14x21P, that is what I want. But when I check inside of propeller says 14x17P, and I check the part number in the propeller that is 8M0055536, that's match with the info in the box. I put that part number on google and says 14x21P. So my question is that prop is 14x17P or 14 X 21P?